marcosschroh dataclasses-avroschema up to 0.70.5 Enum Generation EnumRepresentation.render_symbols injection

Summaryinfo

A vulnerability marked as critical has been reported in marcosschroh dataclasses-avroschema up to 0.70.5. This issue affects the function EnumRepresentation.render_symbols of the component Enum Generation. This manipulation causes injection. This vulnerability appears as CVE-2026-108385. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in marcosschroh dataclasses-avroschema up to 0.70.5 and classified as critical. Affected by this vulnerability is the function EnumRepresentation.render_symbols of the component Enum Generation. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.38.0 through 0.70.5, BaseGenerator.parse_enum and EnumRepresentation.render_symbols use each schema-controlled enum symbol as a generated enum member name after case conversion but without validating it as an identifier. When generator classes are used directly, newlines and punctuation can inject constrained statements into the generated enum class body, allowing namespace modification or preventing the module from loading. Version 0.70.6 fixes the vulnerability by validating every enum symbol as a name.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-108385 since 10/09/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

Upgrading to version 0.70.6 eliminates this vulnerability.

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Productinfo

Vendor

• marcosschroh

Name

• dataclasses-avroschema

Version

• 0.70.0
• 0.70.1
• 0.70.2
• 0.70.3
• 0.70.4
• 0.70.5

Website

• Product: https://github.com/marcosschroh/dataclasses-avroschema/

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